IT IS the age-old question that has stumped the finest minds for thousands of years. But scientists claim to have finally discovered the answer to the conundrum of what came first – the chicken or the egg? Researchers at the University of Sheffield and the University of Warwick have found that a protein called ovocleidin (OC-17) is crucial in the formation of eggshells. It is produced in the pregnant hen’s ovaries so the correct reply to the egg riddle must be that the chicken came first.

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